No one have never heard the word UFO or "Unidentify Flying Object". As they know, it's a space plane that alien use. It make a lots of people interested and become to an inducement for a lots of movie such as Star Wars. Someone think they will find them someday, but I think there are none of them for 2 reasons.
First, no one have seen UFO. If it was found, I think we will have a photograph or some news about it. And no one can give some details what it loos like or give some opinion about its shape.
Next, there is no alien on other planets. Today space technology are grow up. NASA cane send pilots to inspect other planets. But haven't found any alien on other planets. If they found them we would know about this.
These reasons make me believe that there are none of UFO.
Do you think there are any UFO?

hi,i do agree on your points. humans always make something unbelievable not to discover the nature but to fool itself.
but there's still something existed you may hardly believe. a lot of evidence gathered will convince you that there's still wildman living in the world, while we merely discover it. it disobeys the Darwinism theory but it's true. so many proofs show that either in america and in china the wildman make a life in the woods, and generally aviod the outside watching.
so magic but true.

i believe in UFO because the universe is very big! and we live just part of it. so i believe that somewhere there are some being in this big universe. you said that Nasa sent some pilots to space and nothing found. but,in universe there are another galaxy and this technology we cannot go to another galaxy and i heard that in USA there is secret base and it has UFO. so we cannot say that UFO and aliens don't exist

I often watch people discussing on the TV; USA' arms, aliens plane, and many guesses.
I don't know what is true, but I believe UFO are in somewhere.
Expecting that unknown lives in the space is a hope for studying about the space, so i do believe.